Planning Jan '08 trip...

Wondering about any recent experiences with early check-ins and late check-outs? (earlier posts noted no problems with either from at least one experience, but nothing recent.)

I'd be looking for both early arrival and late departures, so wondering if paid extra day(s) are necessary. Hoping my Diamond status will help.

Also, read that best rooms are HHonors 8th floor and Executive 9th floor, but other than that any "good" or "bad" rooms on either one (e.g., corner room, noisy ones, etc.)?

Thanks in advance.